If inflation comes back, saving money could actually cost you a lot of money. MSN currently has a good article talking about inflation in the early 1980s that hit 13% - I'm not sure how many of you remember that, but I do.
<a href="http://moneycentral.msn.com/content/Savinganddebt/Savemoney/P133222.asp">Lessons from the days of 13% inflation</a>